Feedback Linearization of Hysteretic Thermoelastic Dynamics of Shape Memory Alloy Actuators with Phase Transformations

Abstract:

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In the current paper, a macroscopic differential model for the hysteretic dynamics in shape memory alloy actuators is constructed by using the modified Landau theory of the first order phase transformation. An intrinsic thermo-mechanical coupling is achieved by constructing the free energy as a function depends on both mechanical deformation and the material temperature. Both shape memory and pseudoelastic effects are modeled. The hysteretic dynamics is linearized by introducing another hysteresis loop via nonlinear feedback strategy, which cancels the original one.

Info:

Periodical:

Advanced Materials Research (Volumes 47-50)

Edited by:

Alan K.T. Lau, J. Lu, Vijay K. Varadan, F.K. Chang, J.P. Tu and P.M. Lam

Pages:

69-72

DOI:

10.4028/www.scientific.net/AMR.47-50.69

Citation:

L. X. Wang et al., "Feedback Linearization of Hysteretic Thermoelastic Dynamics of Shape Memory Alloy Actuators with Phase Transformations", Advanced Materials Research, Vols. 47-50, pp. 69-72, 2008

Online since:

June 2008

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Price:

$35.00

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